CVETKOSKA, A., LEVKOV, Z. and HAMILTON, P. B. (2014) “<em>Surirella subrotunda sp. nov.</em> and <em>Surirella parahelvetica sp. nov.</em>, two new diatom (Bacillariophyta) species from Lake Prespa, Macedonia”, Phytotaxa, 156(3), pp. 145–155. doi: 10.11646/phytotaxa.156.3.5.